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AR upper in 6 PPC.
chiefr
Member Posts: 13,717 ✭✭✭✭
Have a chance to buy a complete custom upper in this cal. Heavy barrel 24". The seller has never fired it.
All the BR guys are using 6 PPC bolt guns these days. Never heard of an AR in this cal but, dont see why not since the 6.5 Grendell, and 7.62x39 share the same case.
My main concern would be with crimping bullets. Having been around semi autos particularly ARs for years, I will never shoot ammo that is not crimped. Been reloading near 50 years and always crimp any ammo I feed in semi autos. Have personally seen the negative affects of firing not crimped bullets in semi auto bullets more times than many. Been in a number of heated debates over the subject of crimping and autos.
Any thoughts here? I dont think anyone makes a separate crimp die in this cal. Accuracy potential inputs?
All the BR guys are using 6 PPC bolt guns these days. Never heard of an AR in this cal but, dont see why not since the 6.5 Grendell, and 7.62x39 share the same case.
My main concern would be with crimping bullets. Having been around semi autos particularly ARs for years, I will never shoot ammo that is not crimped. Been reloading near 50 years and always crimp any ammo I feed in semi autos. Have personally seen the negative affects of firing not crimped bullets in semi auto bullets more times than many. Been in a number of heated debates over the subject of crimping and autos.
Any thoughts here? I dont think anyone makes a separate crimp die in this cal. Accuracy potential inputs?
Comments
If they don't make a factory crimping die for the 6 mm PPC? It might be possible, to jury rig one of their other 6 mm or .243 factory crimping dies. So that they might work?
Recently I had to do that, with a Lyman .223 "M" die. For seating 40 grain bullets, in Armscore 22 TCM brass.
All the BR guys are using 6 PPC bolt guns these days. Never heard of an AR in this cal but, dont see why not since the 6.5 Grendell, and 7.62x39 share the same case.
6 PPC is a new challenge. My concern as away is the bolt slam and Newtons law: Bolt slam moves case forward; bullet resists forward momentum. Have seen an upper split and shooter taken to ER and have a considerable amount of stitches on fingers and hand. Shooting 190gr SMKs out of an AR 308 w/o crimping bullets.....bad idea.
Another concern with ARs is they like FL sized brass over NSO.
As mentioned in OP, crimp at least to me is a must and would have to be a subject of experimentation with different degrees.
The Lee FCDs have been God send in my endeavors to gain max accuracy out of ARs. I trust them to eliminate bullet setback. Did not know Lee made one in 6PPC and will check it out.
Seller adding plenty of Norma Brass and RCBS dies to add at no extra cost. Twist unk, but I can check myself. Barrel length is 24" rifle length tube. Seller is a BR guy and well known in my state but having to quit as age taken the best of his eye sight.